Pool School
How to Test Pool Water: Levels & Ideal Ranges (2026)
Learn how to test pool water in 5 minutes using strips, drop kits, or digital testers, then check your readings against our chart of ideal chemical levels.
Cloudy Pool Water: Causes and Fixes | Discount Pool Mart
Milky pool water? Learn the 6 causes, from low chlorine to high pH and calcium, and the right order to fix them: test, balance, filter, then clarify.
How to Remove Pool Stains: Identify & Treat
Organic, metal, or mineral? Do two cheap spot tests to identify your pool stain, then use the right treatment and a tool that won't scratch your surface.